docs: def get_swimlane(self):
          """Handle multi-select and single-select modes"""
          if self.multiselect:
              value = self._get()
              children = []
              if value:
                  for child in value:
                      children.append(self.cast_to_swimlane(child))
  
                  return children
              return None
          return super(MultiSelectField, self).get_swimlane()